stroke: Ensure a minimum message length

diff --git a/src/libcharon/plugins/stroke/stroke_socket.c b/src/libcharon/plugins/stroke/stroke_socket.c
index c568440b7ae275fac2f832eddfa0563a98d9ee99..1e7f210e940abec158391fe266a03088b5603ea4 100644 (file)
--- a/src/libcharon/plugins/stroke/stroke_socket.c
+++ b/src/libcharon/plugins/stroke/stroke_socket.c
@@ -627,6 +627,11 @@ static bool on_accept(private_stroke_socket_t *this, stream_t *stream)
                }
                return FALSE;
        }
+       if (len < offsetof(stroke_msg_t, buffer))
+       {
+               DBG1(DBG_CFG, "invalid stroke message length %d", len);
+               return FALSE;
+       }
 
        /* read message (we need an additional byte to terminate the buffer) */
        msg = malloc(len + 1);